7751380221139 has 2 divisors, whose sum is σ = 7751380221140. Its totient is φ = 7751380221138.

The previous prime is 7751380221127. The next prime is 7751380221203. The reversal of 7751380221139 is 9311220831577.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7751380221139 - 2¹⁵ = 7751380188371 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7751380221092 and 7751380221101.

It is not a weakly prime, because it can be changed into another prime (7751380221239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3875690110569 + 3875690110570.

It is an arithmetic number, because the mean of its divisors is an integer number (3875690110570).

Almost surely, 2^{7751380221139} is an apocalyptic number.

7751380221139 is a deficient number, since it is larger than the sum of its proper divisors (1).

7751380221139 is an equidigital number, since it uses as much as digits as its factorization.

7751380221139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 635040, while the sum is 49.

The spelling of 7751380221139 in words is "seven trillion, seven hundred fifty-one billion, three hundred eighty million, two hundred twenty-one thousand, one hundred thirty-nine".